I got my total nv sometime around may of last year in preperation for a state tournament. Initially, i loved the ball, i ended up shooting a 624 (254, 224, 146) at the state tournament (my avg at the time was around 160, This is still my high series to date). The ball hooked perfect, and was very forgiving. However, after about 75-100 games, although i was cleaning the ball after every session with energizer cleaner, the balls performance had significantly deteriorated. Now, after about 175 games, though my average is about 170, i haven't bowled an average series in almost a month. The ball has lost almost all of its kick, especially on the heavier oil patterns which i commonly bowl on. I am considering a hot water soak or a professional resurfacing in order to avoid purchasing another ball (ive always been a single ball arsenal guy). Because of this, i would not reccomend using this ball on the very heavy oil patterns, and i would recomend having this ball only if it is alongside other quality, more reactive balls as well.